EP2929225B1 - Pressure element for a coupling device for a tube - Google Patents

Pressure element for a coupling device for a tube Download PDF

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Publication number
EP2929225B1
EP2929225B1 EP13805317.8A EP13805317A EP2929225B1 EP 2929225 B1 EP2929225 B1 EP 2929225B1 EP 13805317 A EP13805317 A EP 13805317A EP 2929225 B1 EP2929225 B1 EP 2929225B1
Authority
EP
European Patent Office
Prior art keywords
pressure element
tube
segment
element segment
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13805317.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2929225A1 (en
Inventor
Michel Paul Hulsebos
Jeroen Hermanus Johannes Wijlens
Leonardus Henricus Wilhelmus Giesen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Georg Fischer Waga NV
Original Assignee
Georg Fischer Waga NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Georg Fischer Waga NV filed Critical Georg Fischer Waga NV
Priority to PL13805317T priority Critical patent/PL2929225T3/pl
Priority to RSP20191199 priority patent/RS59291B1/sr
Priority to SI201331575T priority patent/SI2929225T1/sl
Publication of EP2929225A1 publication Critical patent/EP2929225A1/en
Application granted granted Critical
Publication of EP2929225B1 publication Critical patent/EP2929225B1/en
Priority to HRP20191668 priority patent/HRP20191668T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members

Definitions

  • the present invention relates to a pressure element for use in a coupling device for exerting a clamping force on a tube, wherein the said pressure element is configured to be used as one of a series of correspondingly embodied pressure elements, wherein said pressure element as well as each pressure element of said series comprises a first pressure element segment and a second pressure element segment and wherein in use the first pressure element segment is arranged for being placed proximally and the second pressure element segment is arranged for being placed distally with respect to the tube.
  • the invention relates to a coupling device for coupling with a tube, comprising at least one pressure element for exerting a clamping force on the tube, wherein the said at least one pressure element is one of a series of correspondingly embodied neighboring pressure elements, wherein each pressure element of said series comprises a first pressure element segment and a second pressure element segment, and wherein the first pressure element segment is placed proximally and the second pressure element segment is placed distally with respect to the tube.
  • Such a pressure element and such a coupling device are disclosed in EP2090815 and WO2007/055576 .
  • WO2007/055576 relates to a coupling device for coupling with a tube, comprising at least one pressure element for exerting a clamping force on the tube, wherein the at least one pressure element is provided with at least one sealing organ wherein, at the side facing away from the tube, the said at least one pressure element is embodied with surfaces that converge towards each other in a radial orientation away from the tube, and that further support elements are provided that can be coupled to each other and are designed to be placed directly or indirectly against said surfaces of the at least one pressure element, so as to provide the clamping force on the tube.
  • the coupling device of WO2007/055576 is embodied with contact surfaces with an incline which is designed such that during tension strain between the coupling and the tube, the first pressure element segment is caused to clamp the tube more tightly and furthermore, that the tension strain between the coupling and the tube endows the second pressure element segment with an increased force on the support elements.
  • the first pressure element segment is provided with a projection at an extremity of the inclined surface of the first pressure element segment that is closest to the tube, and which limits the movement of the second pressure element segment.
  • This projection is said to be particularly useful for increasing the force that the co-operating support walls exert on the at least one pressure element. Due to the inclining contact surfaces of the separate pressure element segments, the absence of this projection could mean that the mutual positioning of these pressure element segments cannot be guaranteed.
  • a remaining problem with the known coupling device is the trade-off that exists between the angle of the inclination between the contacting surfaces of the first pressure element segment and the second pressure element segment on the one hand, and on the other hand the capability of the known coupling device to resist loss of operationability of the coupling device when heavy tension strains are applied to the tube, and at the same time to increase the effectiveness of the sealing action in that heavy tension strain situation.
  • the effectiveness of the sealing action can be improved by arranging that there is a relatively small angle of inclination of said contacting surfaces. Conversely the effectiveness of the sealing action decreases when the angle of inclination becomes too large.
  • a relatively small angle of inclination of said contacting surface enlarges however the danger that when heavy tension strains exist between the tube and the coupling device, the first pressure element segment initially enlarges the pressure exerted on the tube, yet with further increased tension strain will contract the tube and/or slip away from underneath the second pressure element segment, causing that the coupling with the tube is entirely lost.
  • each pressure element is provided with a projection extending transversely to the longitudinal direction of the tube, and that said projection extends into a slit that is provided in a directly neighboring second pressure element segment that forms part of a neighboring pressure element.
  • This projection extending transversely to the longitudinal direction of the tube does not impact the assembly of the coupling device, which is done by making a complete ring of pressure elements that are of same shape and dimension, and this is irrespective whether or not the pressure elements are also embodied with the above-mentioned first projection at the extremity of the inclined contacting surfaces closest to the tube, which is provided on the first pressure element segment to limit the movement of the second pressure element segment.
  • an embodiment of the coupling device has the feature that the at least one pressure element is one of a series of correspondingly embodied neighboring pressure elements, wherein each pressure element of said series comprises a first pressure element segment and a second pressure element segment, wherein the first pressure element segment is placed proximally and the second pressure element segment is placed distally with respect to the tube, and that of each pressure element the first pressure element segment is provided with a projection extending transversely to the longitudinal direction of the tube, and that said projection extends into a slit that is provided in a directly neighboring second pressure element segment that forms part of a neighboring pressure element.
  • the slit provides a stop limiting the extension of the projection extending in said slit, so as to cause that longitudinal movement of the first pressure element segment and the second pressure element segment of any pressure element with respect to each other is limited.
  • the angle of inclination of the contacting surfaces of the first pressure element segment and the second element segment can be relatively small which is beneficial for effective sealing, without the danger that the functionality of the coupling device of the invention is lost when heavy tension strains are present between the tube and the coupling device.
  • the invention is also embodied in the loose pressure elements for use in a coupling device as explained above.
  • the said loose pressure element of the invention is one of a series of correspondingly embodied pressure elements, wherein each pressure element of said series comprises a first pressure element segment and a second pressure element segment, and wherein in use the first pressure element segment is placed proximally and the second pressure element segment is placed distally with respect to the tube.
  • the first pressure element segment is provided with a projection that in use extends transversely to the longitudinal direction of the tube, and this projection is arranged to extend into a slit that is provided in a second pressure element segment that forms part of an adjoining pressure element.
  • the invention also covers an embodiment in which the slit in the adjoining pressure element provides a stop limiting the extension of the projection extending in said slit, so as to cause that longitudinal movement of the first pressure element segment and the second pressure element segment of the adjoining pressure elements with respect to each other is limited.
  • FIG. 1 some aspects of a coupling device according to the invention will now be elucidated that the coupling device shares with the coupling device of the prior art.
  • the coupling device shown in figure 1 comprises a sleeve part 1 with an insert end 2 for the tube 10 and at least one pressure element 3 for exerting a clamping force on the tube 10.
  • the pressure element 3 co-operates with a sealing organ 12, usually an element made of rubber, providing the actual seal around the tube 10.
  • the at least one pressure element 3 is further provided with surfaces that converge in the radial direction, whose orientation corresponds to the orientation of the support walls 9 and 11.
  • the converging surfaces of the pressure element 3 may be flat, concave or convex.
  • the above-mentioned support walls 9 and 11 can be mutually coupled by means of bolt and nut element 8, such that when this bolt and nut element 8 is tightened, the support walls 9 and 11 clampingly press the at least one pressure element 3 onto the tube 10.
  • Fig. 1 shows that the at least one pressure element 3 is embodied with a first pressure element segment 5 and a second pressure element segment 4, wherein the first pressure element segment 5 is proximally, and the second pressure element segment 4 is distally positioned with respect to the tube 10.
  • the first and the second pressure element segments 4, 5 are provided with co-operating contact surfaces 7 placed to abut to each other, which have a predetermined incline in respect to the longitudinal axis 14 of the tube 10.
  • Fig. 1 shows that the incline of the contact surfaces 7 is designed such that when the tube 10 is under tension strain in the direction of arrow A, the first pressure element segment 5 is caused to clamp the tube 10 more tightly.
  • the incline of the contact surfaces 7 is further designed such that when the tube 10 is under said tension strain in the direction of arrow A, the second pressure element segment 4 exerts an increased force on the support walls 9 and 11.
  • the sealing organ 12 is preferably embodied as rubber sealing element placed at least partly between a support wall 9 and the segmented pressure element 3 on the one side, and the tube 10 and the segmented pressure element 3 on the other side.
  • Fig. 1 does not show the option that the first pressure element segment 5 possesses a projection limiting the movement of the second pressure element segment 4, but this construction is known from fig. of WO2007/055576 .
  • Fig. 1 does show that the first pressure element segment 5 is provided with a friction-increasing surface 13 at the side facing towards the tube 10.
  • the friction-increasing surface 13 may be embodied as inlay or alternatively this friction-increasing surface 13 may form an integral part of the first pressure element segment 5.
  • the at least one pressure element is one of a series of correspondingly embodied neighboring pressure elements 3, 3', 3". This is shown in figure 2.
  • Figure 3 shows detail A of figure 2 , which shows with reference to the only visible pressure element 3 that each pressure element of said series comprises a first pressure element segment 5 and a second pressure element segment 4, wherein the first pressure element segment 5 is to be placed proximally and the second pressure element segment 4 is to be placed distally with respect to a tube.
  • the first pressure element 5 is provided with a friction increasing surface 13.
  • This figure 3 also clearly shows that the pressure element 3 is provided with a rubber sealing element 12.
  • figure 4 shows a part of the ring forming a series of pressure elements in an isometric view, wherein at arrow B a connection between neighboring elements 3' and 3" still has to be completed.
  • This incompleted connection provides the opportunity to view at the feature of the invention that of each pressure element, as is shown with reference to pressure element 3", the first pressure element segment 5" is provided with a projection 15 that extends transversely to the longitudinal direction of the tube to which the coupling device is intended to be mounted.
  • Figure 6 provides a corresponding side view of this pressure element 3" which is embodied with a first pressure element segment 5" and a second pressure element segment 4", and in which the sideways extending projection 15 of the first pressure element segment 5" is clearly visible.
  • the projection 15 of the first pressure element segment 5" as shown in figure 6 cooperates with a slit 14 in a neighboring pressure element 3' as shown in figure 5.
  • Figure 5 provides a view at the side of the pressure element 3' that lies adjacent to the pressure element 3" of figure 6 , and shows that the slit 14 is provided in the second pressure element segment 4' that forms part of this neighboring pressure element 3' of figure 5 .
  • the said projection 15 of the pressure element 3" shown in figure 6 thus extends into the slit 14 of the pressure element 3' shown in figure 6 .
  • the said slit 14 provides a stop 16 limiting the extension of the projection 15 extending in said slit 14, so as to cause that longitudinal movement of the first pressure element segment 5" and the second pressure element segment 4' of any neighboring pressure elements 3', 3" with respect to each other is limited.
  • arrow C indicates the maximum stroke that is available for projection 15 when excursing along slit 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Joints With Sleeves (AREA)
  • Earth Drilling (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Measuring Fluid Pressure (AREA)
EP13805317.8A 2012-12-10 2013-12-05 Pressure element for a coupling device for a tube Active EP2929225B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL13805317T PL2929225T3 (pl) 2012-12-10 2013-12-05 Element naciskowy do urządzenia łączącego dla rury
RSP20191199 RS59291B1 (sr) 2012-12-10 2013-12-05 Komprimirajući element za spojnicu za cev
SI201331575T SI2929225T1 (sl) 2012-12-10 2013-12-05 Pritisni element za sklopno napravo za cev
HRP20191668 HRP20191668T1 (hr) 2012-12-10 2019-09-16 Element pritiska za sprežni uređaj za cijev

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2009953A NL2009953C2 (en) 2012-12-10 2012-12-10 A coupling device for a tube.
PCT/EP2013/075597 WO2014090667A1 (en) 2012-12-10 2013-12-05 A coupling device for a tube

Publications (2)

Publication Number Publication Date
EP2929225A1 EP2929225A1 (en) 2015-10-14
EP2929225B1 true EP2929225B1 (en) 2019-07-03

Family

ID=47561772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13805317.8A Active EP2929225B1 (en) 2012-12-10 2013-12-05 Pressure element for a coupling device for a tube

Country Status (20)

Country Link
US (1) US9816648B2 (pt)
EP (1) EP2929225B1 (pt)
JP (1) JP6305424B2 (pt)
CN (1) CN104884854A (pt)
BR (1) BR112015011978A2 (pt)
CY (1) CY1122057T1 (pt)
DK (1) DK2929225T3 (pt)
ES (1) ES2748802T3 (pt)
HR (1) HRP20191668T1 (pt)
HU (1) HUE045483T2 (pt)
IL (1) IL238533A0 (pt)
LT (1) LT2929225T (pt)
NL (1) NL2009953C2 (pt)
PL (1) PL2929225T3 (pt)
PT (1) PT2929225T (pt)
RS (1) RS59291B1 (pt)
RU (1) RU2619972C2 (pt)
SI (1) SI2929225T1 (pt)
WO (1) WO2014090667A1 (pt)
ZA (1) ZA201504019B (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2012869B1 (en) 2014-05-22 2016-03-15 Fischer Georg Waga Nv Fitting for coupling to a pipe.
DE102014114959A1 (de) * 2014-10-15 2016-04-21 Vag-Armaturen Gmbh Rohrverbindungsvorrichtung
US10762309B2 (en) 2014-12-19 2020-09-01 Avery Dennison Retail Information Services, Llc RFID mobile workstation device
NL1041958B1 (en) 2016-06-29 2018-01-05 Wavin Bv Press fitting device
NL2019920B1 (en) 2017-11-16 2019-05-22 Fischer Georg Waga Nv Coupling device
AT524050B1 (de) * 2020-12-15 2022-02-15 E Hawle Armaturenwerke Gmbh Rohrverbindungsvorrichtung mit einem Sicherungskeil und einem Bremselement

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8830202D0 (en) * 1988-12-23 1989-02-22 Parkfield Group Plc Pipe coupling
NL1002514C2 (nl) * 1996-03-04 1997-09-05 Fischer Georg Waga Nv Koppelinrichting.
GB2363437B (en) * 2000-06-13 2004-08-11 Glynwed Pipe Systems Ltd Method and apparatus for coupling pipe ends and a sealing and gripping assembly for the apparatus
US7354073B2 (en) * 2004-03-30 2008-04-08 Waterworks Technology Development Organization, Co., Ltd. Pipe joint
DK176282B1 (da) * 2005-03-04 2007-06-11 Aage V Kjaers Maskinfabrik As Rörkobling
NL1030404C2 (nl) * 2005-11-11 2007-05-14 Fischer Georg Waga Nv Koppelinrichting voor een buis.
EP1906073A1 (en) * 2006-09-26 2008-04-02 Ludwig Frischhut GmbH & Co. KG Sealing organ for a tube
PT103946B (pt) * 2008-01-28 2009-05-04 Fucoli Somepal Fundicao De Fer Junta multimateriais com garras de bloqueio
NL2001726C2 (nl) * 2008-06-26 2009-12-29 Fischer Georg Waga Nv Koppelinrichting en werkwijze voor de vervaardiging van een in een dergelijke koppelinrichting te gebruiken gripring.
NL2002683C2 (en) * 2009-03-30 2010-10-04 Fischer Georg Waga Nv A coupling device.
GB2474899B (en) * 2009-10-30 2016-02-03 Crane Ltd Improved pipe coupling
GB201000125D0 (en) * 2010-01-05 2010-02-17 Haywood Tyler Group Ltd Grip ring
CN202152893U (zh) * 2011-07-19 2012-02-29 胡高中 一种快速装卸方便接头

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
HRP20191668T1 (hr) 2019-12-13
CY1122057T1 (el) 2020-11-25
SI2929225T1 (sl) 2019-10-30
DK2929225T3 (da) 2019-08-26
RU2015117414A (ru) 2017-01-16
CN104884854A (zh) 2015-09-02
NL2009953C2 (en) 2014-06-11
RS59291B1 (sr) 2019-10-31
PL2929225T3 (pl) 2019-12-31
BR112015011978A2 (pt) 2017-07-11
PT2929225T (pt) 2019-07-29
US9816648B2 (en) 2017-11-14
IL238533A0 (en) 2015-06-30
LT2929225T (lt) 2019-10-10
JP6305424B2 (ja) 2018-04-04
ES2748802T3 (es) 2020-03-18
JP2016503862A (ja) 2016-02-08
ZA201504019B (en) 2016-04-28
US20150308594A1 (en) 2015-10-29
WO2014090667A1 (en) 2014-06-19
EP2929225A1 (en) 2015-10-14
RU2619972C2 (ru) 2017-05-22
HUE045483T2 (hu) 2019-12-30

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